Automotive demountable wheel



A x- R.L.QLSE- 1,813,464

. AUTOMOTIVE DEMOUNTA BLE WHEEL Filed Nov. so, 1923 I (INVENTORI 42.0..mg, K

ORNEYS.

Patented Aug. 23, 12932 surorrlcn ROLF LEHMAIN'N OLSEN, OF JAMAICA; NEWYORK AUTOMOTIVE DEMOUNIABLE WHEEL Application filed November 30, 1923.Serial Ito-877,822.

This invention relatesto the construction of so-called demountablewheels for automobiles and consists in the combination of the severalfeatures hereinafter described which are adaptedfor use either ondriving or steering wheels, but articularly the latter, the objcot-being to bring the driving and braking forces into substantially theplane of the wheel tread, and, in the case of a steering wheel, tolocate the steering axis also substantially in said plane, so as toproduce a wheel mechanicall well adapted to the conditions of, serviceesides being compact and pleasing in appearance.

In the accompanying drawing Fig. 1 represents a central section of afront steering .wheel embodying the principles of this invention intheir preferred form. The body part of the wheel removed from the hubpart is indicated in dotted lines in this figure.

Fi 2 is a vertical section through the steering spindle, the other partsbeing in side elevation.

Fig. 3 is a horizontal section of the wheel part broken away.

Fig. 4 is a section through the brake-actuating cam.

The wheel is divided into a quickly remoi able body part and a hub partwhich is journalled on the axle. The separation or removability of thebody from the hub is for the purpose of substitution of a spare bodypart as in the case of a tire failure. The body part comprises an innerring or hub shell '1 to which the rim 2 is tied by means of spokes. Therim may be of anydesired design. The hub shell l is adapted to beremovably telescoped over and seated upon the hub part of the wheel andwhen in position thereon is fastened in place by means oft-he bolts orstuds 3 -engaging its flange. The hub part comprises a cylindrical wallI} and a web the latter having a taper-socketed hub keyed and boltedfast to the stub shalt 6, so that the latter revolves with the wheel.The seat for the hub shell is formed by the exterior cylindrical surfaceofthe wall 4 and when the hub shell is in place thereon the said walland the hub shell 1, as well as the wheel rim 2, all occupy the samecommon plane and are substantially centered thereon. When the nuts 3 arescrewed home they force the inner flared end of the shell 1 against thethickened and coned edge 7 of the hub wall 4, which edge serves as thelimit stop for the wheel body and likewise re-enforces the wall 4against distortion. The sleeve portion of the hub shell 1, which seatson the wall 4, desirably overhangs the edge 7 and the inner row of spokenipples is set in the overhanging portion. The other row of spokenipples is set in the opposite end of the hub shell at which point thelatter is provided with an annular bulge 8 in order that the heads ofthe nipples may have adequate clearance from the hub structure.

The stub shaft 6 is journalled in a pair of roller bearings. mounted ina housing 10, which housing is mounted on the upright steering spindle11 as indicated in Fig. 2, the spindle 11 being secured fast to thefront axle 12. The design of these parts will be clear from the drawing,without description. The

two roller bearings are respectively situated on opposite sides of thecentral plane of the wheel and the housing 10 is intersected by suchplane while the steering spindle 11 is also substantially intersectedthereby, being in any event close to said plane and within the hubstructure.

The wall t of the hub part, besides serving as the seat for theremovable wheel body, also serves-as the brake drum. Its inner surfaceis cylindrical and adapted to be frictionally engaged by two or moreinternal expanding brake shoes 13 which are provided with the usualbrake liningas indicated. These shoes are fulcrumed at their upper endsupon a common anchor stud 14 carried upon an upwardly extending arm 10of the housing 10 and at their lower ends they are adapted to be spreadapart by a floating cam 15 mounted in a socket in a lower arm 10 of saidhousing. The ends of the brake shoes are providedwith anti-frictionrollers for engagement by the cam. The latter is confined in itscylindrical socket in the arm 10 by means of a cap 10 and the interiorofthe cam is hollow and square or angular in section as indicated inFigure 2 and adapted to'be loose] on aged and rotated by thecorresponding y s aped end of the brake rock shaft 16, which latter isjournalled on or in the front axle. Rotation of this shaft rocks the cam15, therebyspreadin the brake shoes against the brake drum 4 an inasmuchas the axis of the steering spindle passes through the cam and the camactuating end of the brake shaft, the action of the latter on the brakeshoes may be independent of and unaffected by the angular position ofthe plane of the wheel with reference to the front axle. 'The brakeshoes are thus situated inside the wheel, intersected by the centralplane therof and the frictional heat developed by them is provided withan adequate path of escape represented by the hub shell 1 and the spokesconnected to the latter. The springs shown serve to contract the brakeshoes.

A cover plate 17 is secured by screws to the brake arms 10 and ,10" andserves to enclose and protect the brake mechanism. Hub and dust caps arealso shown in their 0 usual relations.

While the wheel above described is a steering wheel it will now beapparent that the same relative arrangement of wheel body and brake drumcan also be applied to non-steering or driving wheels in an obvious way.

I claim:

1. In an automotive wheel, the combination of a hub part including ahub, web and brake drum, and a body part including a rim, and a hubshell having an annular flange overlapping said web adapted to besecured thereto by a series of bolts and a sleeve portion in the sameplane as the rim adapted to telescope over and seat upon the exterior 4surface of the brake drum.

2. An automotive wheel comprising a center 'part and an outer part, thecenter art consisting of a brake drum having a ub fitted to a bearingmember, a web and a cylindrical friction wall; the outer part consistingof a shell, spoking means and'tire, said outer part telescoping over andseating upon the friction wall of the drum and having an in-bentsecuring flange overlapping the marginal region only of said centerpart.

3. An automotive wheel comprising a center part and an outer part, thecenter part including a web and friction wall; the outer part includinga shell surrounding the friction wall and finding its entire bearingthere on and provided with securing means coact ing with the marginalpart of the web, a tirerim and means wholly confined to the annularspace between said rim and said friction wall for connecting said rim tothe shell. In testimony whereof, I have signed this specification.

ROLF LEHMANN OLSEN.

